How to remove OneBlock adware from a browser
Written by Tomas Meskauskas on
What kind of application is OneBlock?
While testing the OneBlock application, our team noticed that it displays annoying advertisements. Thus, we classified OneBlock as adware (advertising-supported software). It is common for adware to be promoted and distributed using deceptive methods. We discovered OneBlock while analyzing a page running the "Your System Is Seriously Damaged" scam.
More about OneBlock
OneBlock is promoted as an app offering a much higher level of privacy when browsing the web. It is supposed to block advertisements. However, we learned that it shows them. Ads displayed by advertising-supported applications can lead to untrustworthy web pages.
Clicking those ads can open technical support scam pages, phishing websites, deceptive pages urging to install "updates" or shady applications, etc. Sometimes, ads shown by the adware can be designed to run certain scripts to download or install unwanted software. Thus, it recommended not to trust adware and ads displayed by it.
In addition to bombarding users with unwanted ads, OneBlock can read and change data on all websites. It may be gathering browsing-related and other information that could be sold to third parties, used for marketing purposes, or monetized in other ways.
| Name | Ads by OneBlock |
| Threat Type | Adware |
| Symptoms | Your computer becomes slower than normal, you see unwanted pop-up ads, you are redirected to dubious websites. |
| Distribution methods | Website running the "Your System Is Seriously Damaged" scam, deceptive pop-up ads, free software installers (bundling), fake Flash Player installers, torrent file downloads, |
| Damage | Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites, loss of private information. |
| Malware Removal (Windows) | To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. |
More about adware
There are advertising-supported apps that can hijack web browsers (change their settings). Most browser-hijacking apps promote questionable search engines. These search engines can show misleading results (promote untrustworthy pages) and redirect to other dubious search engines.
More examples of advertising-supported applications are LinkDownloader, Streaming Downloader, and Ads Tracker.
How did adware install on my computer?
We discovered OneBlock on a deceptive page claiming that the operating system is infected with viruses. We also found that OneBlock has its official page. This app gets added after following the instructions provided on those pages.
In other cases, users install adware via freeware installers, fake installers, or untrustworthy advertisements. Installers containing adware have "Advanced", "Custom", or other settings. Users install adware when they leave those settings unchanged when installing software.
How to avoid installation of unwanted applications?
Download applications and files from reliable sources such as official web pages and verified stores. Do not trust advertisements on dubious pages or allow websites of this kind to show notifications. Deselect unwanted apps included in downloaders and installers before finishing downloads and installations.
If your computer is already infected with rogue applications, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate them.
Appearance of the deceptive page promoting OneBlock:
Another website promoting OneBlock:
Instant automatic malware removal:
Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner
By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.
Quick menu:
- What is OneBlock?
- STEP 1. Uninstall adware applications using Control Panel.
- STEP 2. Remove rogue plug-ins from Google Chrome.
- STEP 3. Remove adware-type extensions from Mozilla Firefox.
- STEP 4. Remove malicious extensions from Safari.
- STEP 5. Remove rogue plug-ins from Microsoft Edge.
Adware removal:
Windows 11 users:
Right-click on the Start icon, select Apps and Features. In the opened window search for the application you want to uninstall, after locating it, click on the three vertical dots and select Uninstall.
Windows 10 users:
Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.
Windows 7 users:
Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.
macOS (OSX) users:
Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.
In the uninstall programs window, look for any unwanted applications, select these entries and click "Uninstall" or "Remove".
After uninstalling the unwanted application, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.
Remove adware from Internet browsers:
Video showing how to remove unwanted browser add-ons:
Remove malicious extensions from Google Chrome:
Click the Chrome menu icon 
(at the top right corner of Google Chrome), select "More tools" and click "Extensions". Locate "OneBlock" and other recently-installed suspicious extensions, select these entries and click "Remove".
Optional method:
If you continue to have problems with removal of the ads by oneblock, reset your Google Chrome browser settings. Click the Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.
After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.
In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.
Remove malicious plug-ins from Mozilla Firefox:
Click the Firefox menu 
(at the top right corner of the main window), select "Add-ons and themes". Click "Extensions", in the opened window locate all recently-installed suspicious extensions, click on the three dots and then click "Remove".
Optional method:
Computer users who have problems with ads by oneblock removal can reset their Mozilla Firefox settings.
Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, in the opened menu, click Help.
Select Troubleshooting Information.
In the opened window, click the Refresh Firefox button.
In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.
Remove malicious extensions from Safari:
Make sure your Safari browser is active, click Safari menu, and select Preferences....
In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.
Optional method:
Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...
In the opened window select all history and click the Clear History button.
Remove malicious extensions from Microsoft Edge:
Click the Edge menu icon 
(at the upper-right corner of Microsoft Edge), select "Extensions". Locate all recently-installed suspicious browser add-ons and click "Remove" below their names.
Optional method:
If you continue to have problems with removal of the ads by oneblock, reset your Microsoft Edge browser settings. Click the Edge menu icon (at the top right corner of Microsoft Edge) and select Settings.
In the opened settings menu select Reset settings.
Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.
- If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.
Summary:
Commonly, adware or potentially unwanted applications infiltrate Internet browsers through free software downloads. Note that the safest source for downloading free software is via developers' websites only. To avoid installation of adware, be very attentive when downloading and installing free software. When installing previously-downloaded free programs, choose the custom or advanced installation options – this step will reveal any potentially unwanted applications listed for installation together with your chosen free program.
Post a comment:
If you have additional information on ads by oneblock or it's removal please share your knowledge in the comments section below.
Frequently Asked Questions (FAQ)
What harm can adware cause?
Usually, adware diminishes the web browsing experience by showing ads that conceal the contents of visited websites. Also, it can manipulate the settings of a web browser and slow down a computer.
What does adware do?
Adware displays various advertisements. Additionally, it can be used to promote fake search engines and gather information about users.
How do adware developers generate revenue?
Usually, they participate in affiliate programs to monetize adware. As affiliates, they promote various pages, services, products, etc.
Will Combo Cleaner remove OneBlock adware?
Yes, Combo Cleaner will eliminate all adware-type applications from the operating system. It is recommended to remove adware automatically since various file leftovers may remain hiding in the system after manual removal.
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